80.00 km 262455.44 feet 49.71 mi 19791.00 seconds 329.85 minutes 5.50 hours 9.04 mi/hr
(publishing this in 2016 because I realized I hadn't done so before.)
Was in San Francisco consulting for Wikipedia. Had some spare time on the weekend, so I rented a bicycle and went for a bicycle ride. Rode the Iron Horse (Rail) Trail from Pleasanton to Concord. It's a nice trail, nearly all on the railbed itself, with very few off-trail sections. Was a gorgeous warm day in California. Back home it was cold and snowy, but I was having fun that Saturday.